Die.



PATENTED MAY 15, 1906 J. J. BROSSOIT. DIE.

AAAAAAAAAAAA ILED AUG.1,1905.

JAMES JOSEPH BROSSOIT, OF SALT LAKE CITY, UTAH.

DIE.

Specification of Letters Patent.

Iatented May 15, 1906.

Application filed August 1, 1905. Serial No. 272,164.

structed die intended especially for use in connection with stone-working drills, particularly hand-drills.

The underlying object of the invention is to construct a single die formed of two members which may be used to perform all of the upsetting or hammering operations necessary in the construction of the drill. In attaining this end I provide a single diewith two peculiarly-arranged working surfaces, so that by changing the position of the work in the die either one of two distinct operations may be performed.

In the present instance I have shown the invention in connection with a drill of the form in which the cutting edge is flattened and flared outward from'the shank. In the construction of the drill it is necessary first to flatten the stock from which the drill is formed, at the same time putting the cutting edge on the drill. After this has been done, it is necessary to crowd. together the flattened. portion to give the drill its flaring or fan-like shape, and therefore the die for forming this drill has a flattened die-face and a deeper die-face sunk in the flattened die-face, the first face operating to flatten out the stock and the deeper face acting to crowd together the flattened portion to give the drill its flaring form. Other shapes may be given the die, according to the work which is to be performed thereby.

The invention resides in certain features of construction, which will be fully set forth hereinafter and pointed out in the claims.

Reference is to be had to the accompanying drawings, which illustrate, as an example, the preferred embodiment of my invention, in which drawings Figure 1 is an end view of the die, showing the anvil-block and hammer in position. Fig. 2 is a side view of the same with parts broken away. Fig. 3 is a plan view of the anvil-section. Fig. 4 is an enlarged end elevation thereof, and Figs. 5 and 6 are views showing the drill.

One section of the die is mounted on a stationary support, and the other section is carried on a hammer or striking element.

Referring to Fig. 1, a may be taken to indicate the anvil-block of a steam-hammer, an I) the plunger thereof. To these parts the sections 0 an d of the die are respectively fastened in any desired manner. The working faces of the die-sections are duplicates, and each has an approximately semicircular groove 10 running from one end edge longitudinally along the die and terminating in termediate the ends of the die-section in an approximately triangular relatively deep cavity 11. Beyond this cavity 1 1 a flaring or fan-shaped relatively shallow cavity 12 is formed. These cavities lie directly contiguous and communicate with each other, and the cavity 1 1 communicates with the directly contiguous groove 10. Now it will be observed that when two sections of the die are matched together, as shown in Fig. 2, two distinct die-cavities are formed, one formed by the two matching cavities 11 and the other formed by the two matching cavities 12. The faces of the shallow cavities 12 serve toflatten out the material from which the drill is formed,

glvmg it the form shown 1n Flg. 5 and drawing down the cutting edge of the drill, and the Walls of the vertical cavities 11 serve to true up the flattened portion, giving the drill the flared finished form shown in Fig. 6.

In the use of the invention after the diesections are suitably mounted the stock from which the drill is to be formed is placed in the groove 10 of the bottom section 0, the end of the stock projecting from the cavity 12. Upon the descent of the upper die-sec tion this end of the stock is given a form similar to that of the cavities 12 when matched together. This flattens the stock and draws down the cutting edge thereof. By giving the stock a quarter-turn an withdrawing it sufficiently to bring the end of the drill over the cavity 11 upon the next descent of the moving section the flattened part of the drill will be crowded together, finishing the operation.

' Having thus described the preferred form of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A drill-die formed of two sections each having two contiguous die-faces thereon,

said faces on each section being inclined oppositely to each other, and one incline being deeper or at a greater angle to the drill position than the other, and the corresponding faces matching when the die-sections are engaged, wherebyupon engaging the end of the stock or Work between the shallow die-faces it will be flattenedout to form the cutting edge of the drill and upon shifting the flattened end into position between the deep die-faces and turning said edge at right angles to its first position it will be swaged sidewise and trued up into flared or finished form.

2. A drill-die formed of two sections each having two contiguous die-faces sunk therein, said faces of each section being formed by cavities, the bottoms of which are inclined opposite to each other and one cavity being deeper and narrower than the other, and the corresponding die-faces matching when the die-sections are engaged together, whereb upon engaging the end of the stock or won between the shallow die-faces it will be flattened out to form the cutting edge of the drill and upon turning the flattened end at right angles to its first position and shifting it into position'between the deep die-faces it will be swaged sidewise and trued up into flared or finished form.

In testimony whereof I have name to this specification in the two subscribing witnesses.

JAMES JOSEPH BROSSOIT.

Witnesses:

CHARLES EDWARD CARsoN, FRANK EMERY JoHNsoN.

presence of signed my 0 

